When you focus too much on material possessions and forget what is truly valuable in life, please look at these:

As a child, you may have viewed mud as a valuable treasure.
As you mature, your perception of treasure may shift to cars and then houses as you grow older.
However, in the end, when you pass away, mud becomes your treasure once more.
This is because you originated from the earth, and it is where you will return after life has come to a close.